What is the main difference between Write-through and Write-back?
The difference between these two caching mechanisms are:
- Write-back
writes data from cache memory to the disk. When caching using write-back, it will be completed when the cache data is overwritten. Using this mode improves file transfer performance. - Write-through
writes data only after the disk data is overwritten.
Despite the risk of data loss that Write-back mode involves during write I/O, Infortrend's CBM (Cache Backup Module) is the solution that prevents data loss and recovers data when the power is back.
Created Date: 05/24/2017